DNS problems

Gigabyte / Nvdaacpi
March 8, 2011 at 01:58:48
Specs: XP Home, 2.2/1gig
What I thought was going to be a simple problem is getting to the point of defeating me so here goes.

Computer connected using a USB LAN adapter was failing to load webpages and failing to update security programs etc. Things done so far:

Deleted cookies, temp files etc.
Checked settings in Internet Options/connections
ping 127.0.0.1 - ok
ping 74.125.230.115 - ok
ping www.google.com - cannot find

OK so figure it's a DNS problem.
ran Winsockfix
reset tcp/ip using netsh int ip reset resetlog.txt
ran full scan with Kaspersky Rescue Disk, DrWeb, Malwarebytes & System Mechanic (the latter was the security program initially on there - since uninstalled as I thought it was the problem)
turned off Windows firewall, no other firewalls installed
Checked the HOSTS file - nothing apart from 127.0.0.1 local host
Still no joy, I can access webpages with their ip address, but not with the www address.
Same on 3 different browsers.
I get an Error 105 (net::ERR_NAME_NOT_RESOLVED) message which points towards DNS servers so I've tried using different DNS servers in the network adapters settings, still no joy.
The problem still occurs on two different ISPs.

I think that was about all anyway next step is a reinstall, but I don't particularly want to do this as it's an oldish computer with a lot of data to backup so any other suggestions greatly appreciated.

"I've always been mad, I know I've been mad, like the most of us..." Pink Floyd


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#1
March 8, 2011 at 03:39:11
Is Internet Options/Connections/LAN free of a proxy? Is a router involved?

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#2
March 8, 2011 at 04:04:37
Thanks for reply. No proxy settings ("Checked settings in Internet Options/connections", 2nd thing done), Where it normally resides it plugs into a BT hub (modem/router) & where I'm working on it now it plugs into a netgear router attached to Virgin cable modem - all working ok with other PCs & I know I have internet access because all ping tests work and I can browse the web using ip addresses, it's the DNS issue that's got me stumped.

"I've always been mad, I know I've been mad, like the most of us..." Pink Floyd


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#3
March 8, 2011 at 09:03:13
Sorry, I missed that. I'm fishing here, the only things I can think of are clearing DNS cache, uninstalling/reinstalling the DHCP client, then making sure the service is running, clearing the DNS setting, and setting the router pass the request on to the ISP. Beyond that, there's SFC, System Restore, or a Repair installation.

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#4
March 8, 2011 at 09:23:36
Thanks again for reply - yes I'm at the repair installation point I think. I've been through the standard fixes, both manually and using automatic programs (winsockfix & CIntrep). All other pcs that use the router here are working fine. It's definitely something to do with the DNS - Chrome gives the error 105 message about 'name could not be resolved' and 'server could not be found' and I've been through all the possible variations of fixes that I can find elsewhere - all to no avail. Really getting annoying now as it shouldn't be this difficult to fix - all the settings are correct, but I'm obviously missing something.... Just thinking aloud here.

"I've always been mad, I know I've been mad, like the most of us..." Pink Floyd


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#5
March 9, 2011 at 01:48:45
Repair reinstall was unfortunately the only option, but at least it's worked, now just have to get everything updated again...

Thanks again for responses

"I've always been mad, I know I've been mad, like the most of us..." Pink Floyd


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